A new rf CMOS mixer with a high performance in 0.18u technology

In this paper, a new highly linear radio-frequency CMOS mixer is presented. The new mixer is derived from the basic Gilbert multiplier. It achieves an outstanding linearity since the new topology does not contain any tail current branches. A CMOS transistor pair is instead applied to the four cross...

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Bibliographic Details
Published inThe 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002 Vol. 2; p. II
Main Authors Salem, R.F., Tawfik, M.S., Ragaie, H.F.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2002
Subjects
Circuit simulation
CMOS technology
Frequency conversion
Integrated circuit noise
Linearity
Mixers
MOSFETs
Radio frequency
RF signals
Threshold voltage
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Summary:In this paper, a new highly linear radio-frequency CMOS mixer is presented. The new mixer is derived from the basic Gilbert multiplier. It achieves an outstanding linearity since the new topology does not contain any tail current branches. A CMOS transistor pair is instead applied to the four cross coupled commutating transistors. Simulations of the extracted layout results show a high linearity improvement over the basic Gilbert mixer, with IIP3 of 31 dBm in 0.8u and 20dBm in 0.18u. Simulations also shows 6dB improvement in the mixer's conversion gain in 0.18u over 0.8u, with 3.2mW power consumption. The new mixer's test chip layout and its extracted simulation characteristics in both technologies are presented.
ISBN:0780375238
9780780375239
DOI:10.1109/MWSCAS.2002.1186848